Well "leaving behind more talent than people acknowledge" isn't really a feather in his cap if he didn't acquire them lol. Yes, I guess he DIDN'T trade away Kelce or Brooks or Peters or Fletcher Cox or Jenkins or Ertz or Johnson. Meanwhile, he lost Maclin, traded McCoy for Kiko, and then subsequently threw a bunch of money at Demarco Murray and the oft-injured Ryan Matthews to replace him. Kudos to the Chipster.
Most people probably don't acknowledge he left them with a lot of talent because that talent preceded him, and he did lose a CONSIDERABLE amount of talent.
Chip also got Ertz and Johnson year 1. In the next two years, he drafted Marcus Smith (who I had to google as I wasn't sure he was a real player), and Nelson Agholor with his first rounders.
Absolutely Foles benefitted from his system experience, no doubt.